Thomas Gibson, the actor who played Aaron Hotchner on Criminal Minds, left the show after the 12th season. He was fired by CBS and the show's producers due to an on-set altercation with a writer.
Gibson had been with the show since its inception in 2005. He was a fan favorite and his departure was a shock to many viewers. However, the producers decided to move on without him.
The show continued for two more seasons without Hotch, with the character's absence explained by his taking a leave of absence from the BAU.
In the season 14 finale, Hotch returned for a brief cameo appearance, providing closure for many fans.
Gibson has since starred in other TV shows and movies, but his departure from Criminal Minds remains a significant event for fans of the series.
